We explored three different ways of representing integers $($i$.$e$.$ whole numbers including both positive & negative$)$: signed magnitude $($failed$!)$; one's complement $($not perfect!$)$; and two's complement $($just right!$).$

Perform the arithmetic operations $(+5)+(-7),$ and $(-3)+(+5)$ in all three representations. $($use $4-$bit representations$)$

What can you say about the outcomes?

Signed magnitude:

Computation:

Outcome:

One's complement:

Computation:

Outcome:

Two's complement:

Computation:

Outcome: